Lecture 01 Introduction To Multimedia.pptx

Multimedia Technology Subject's Lecture

1. Multimedia Systems Design

2. Contents Introduction Multimedia elements Multimedia applications Multimedia systems architecture

3. Definitions and terminologies Multimedia: Multimedia means that computer information can be represented through audio, video, and animation in addition to traditional media (i.e., text, graphics drawings, images). A good general definition is: Multi Many, Multiple, Media Tools that are used to represent or do a certain things, delivery medium, a form of mass communication – newspaper, magazine / tv. Distribution tool & information presentation – text, graphic, voice, images, music and etc. Introduction

4. Definitions and terminologies Multimedia: Multimedia is more than one parallel presentation medium (for example, on CD-ROM or a Web site). Although still images are a different medium than text, multimedia is typically used to mean the combination of text, sound, and/or motion video. Some people might say that the addition of animated images (for example, animated GIF on the Web) Introduction

5. Components of Multimedia The various components of multimedia are Text, Audio, Graphics, Video and Animation. All these components work together to represent information in an effective and easy manner. 1)Text: Text is the most common medium of representing the information. In multimedia, text is mostly use for titles, headlines, menu etc. 2)Audio: In multimedia audio means related with recording, playing etc.

6. Components of Multimedia 3)Graphics: Every multimedia presentation is based on graphics. The used of graphics in multimedia makes the concept more effective and presentable. the commonly used software for viewing graphics are windows Picture, Internet Explorer etc. 4)Video: Video means moving pictures with sound. It is the best way to communicate with each other. 5)Animation: In computer animation is used to make changes to the images so that the sequence of the images appears to be moving pictures.

7. Graphics Design and Print media Graphic design, also known as communication design, is the art and practice of planning and projecting ideas and experiences with visual and textual content. The form of the communication can be physical or virtual, and may include images, words, or graphic forms.

8. An Analog and Digital system Analogue signals : These are usually older electronic gadgets (introduced before the mid 1990’s). A good example of an analogue signal is the loud-speaker of a stereo system. When the volume is turned up the sound increases slowly and constantly. Examples of analogue systems include; Old radios, megaphones and the volume control on old telephone hand sets.

9. An Analog and Digital system Digital signals: Modern electronic products such as computers and mobile phones depend on digital signals. However, a good example of a digital signal is Morse Code. The signal is sent as a series of ‘on’ and ‘off’ pulses. The signal is either present or it is not. Morse code was introduced in 1837 by Samuel Morse, as a method of communication.

10. Hypermedia and Multimedia Multimedia: When we talk about multimedia, first things comes into mind are graphics, drawings, music and videos and that is right. So, the definition of multimedia, is any kind of computer or other technological information and material which can be presented through images, graphics, drawings, videos, music or animations. Hypermedia: Hypermedia is a complex term than multimedia. A little effort will be required to completely understand its core concept. Hypermedia means converting graphics, audios, videos, text, animation, hyperlinks, drawings, etc. If you are reading a document or book on your computer, it allows you to navigate on any part of the document. It is also the fundamental and structural part of the World Wide Web.

11. Hypermedia Example Using a web browser, anyone can browse through pages of online newspapers, read articles, and view pictures or audio/video presentations. In addition, readers can locate a specific article by performing index searches, or by typing detailed requests. In some cases, the user may participate in chat groups and provide feedback to the editors. This type of interactivity requires bringing together images, text, audio, and video elements.

12. WORLD WIDE WEB The World Wide Web is the largest and most commonly used hypermedia application. Its popularity is due to the amount of information available from web servers, the capacity to post such information, and the ease of navigating such information with a web browser. (WWW) Technology is maintained and developed by the World Wide Web Consortium (W3C),

13. Hyper Text Transfer Protocol (HTTP) Stands for "Hypertext Transfer Protocol." HTTP is the protocol used to transfer data over the web. It is part of the Internet protocol suite and defines commands and services used for transmitting webpage data. HTTP is short for HyperText Transfer Protocol. HTTP is the underlying protocol used by the World Wide Web and this protocol defines how messages are formatted and transmitted, and what actions Web servers and browsers should take in response to various commands. HTTP also defines commands such as GET and POST, which are used to handle form submissions on websites.

14. HyperText Markup Language (HTML) Hyper Text Markup Language, commonly abbreviated as HTML, is the standard markup language used to create web pages. Along with CSS, and JavaScript, HTML is a cornerstone technology used to create web pages, as well as to create user interfaces for mobile and web applications.

15. MULTIMEDIA SOFTWARE TOOLS These tools are really only the beginning - a fully functional multimedia project can also call for stand-alone programming as well as just the use of predefined tools to fully exercise the capabilities of machines. Music sequencing and notation Digital audio Graphics and image editing Video editing Animation Multimedia authoring

16. MULTIMEDIA SOFTWARE TOOLS Music Sequencing and Notation Cakewalk :Cakewalk is a well known older name for what is now called Pro Audio. The firm producing this sequencing and editing software, Twelve Tone Systems, also sells an introductory version of their software, " CakewalkExpress ", The term sequencer comes from older devices that stored sequences of notes in the MIDI music language Cubase : Cubase 1S another sequencing/editing program, with capabilities similar to those of Cakewalk.. It includes some digital audio editing tools Macromedia Soundedit : Soundedit is a mature program for creating audio for multimedia projects and the web that integrates well with other Macromedia products

17. MULTIMEDIA SOFTWARE TOOLS Digital Audio Digital Audio tools deal with accessing and editing the actual sampled sounds that make up audio. Cool Edit: Cool Edit is a powerful, popular digital audio toolkit with capabilities (for PC users, at least) that emulate a professional audio studio, including multitrack productions and sound file editing, along with digital signal processing effects. Sound Forge: Sound Forge is a sophisticated PC-based program for editing WAY files. Sound can be captured from a CD-ROM drive or from tape or microphone through the sound card, then mixed and edited. It also permits adding complex special effects. Pro Tools: Pro Tools is a high-end integrated audio production and editing environment that runs on Macintosh computers as well as Windows. Pro Tools offers easy MIDI creation and manipulation as well as powerful audio mixing, recording, and editing software.

18. MULTIMEDIA SOFTWARE TOOLS Graphics and Image Editing: Adobe Illustrator: illustrator is a powerful publishing tool for creating and editing vector graphics, which can easily be exported to use on the web. Adobe Photoshop: Photoshop is the standard in a tool for graphics, image processing, and image manipulation. Layers of images, graphics, and text can be separately manipulated for maximum flexibility, and its "filter factory" permits creation of sophisticated lighting effects. Macromedia Freehand: Freehand is a text and web graphics editing tool that supports many bitmap formats, such as GIF, PNG, and JPEG. These are pixel-based formats, in that each pixel is specified. It also supports vector-based formats, in which endpoints of lines are specified instead of the pixels themselves, such as SWF (Macromedia Flash) and FHC (Shockwave Freehand). It can also read Photoshop format.

19. MULTIMEDIA SOFTWARE TOOLS Video Editing: Adobe Premiere: Premiere is a simple, intuitive video editing tool for nonlinear editing - putting video clips into any order. Video and audio are arranged in tracks, like a musical score. It provides a large number of video and audio tracks, superimpositions, and virtual clips. A large library of built-in transitions, filters, and motions for clips allows easy creation of effective multimedia productions. Adobe After Effects: After Effects is a powerful video editing tool that enables users to add and change existing movies with effects such as lighting, shadows, and motion blurring. It also allows layers, as in Photoshop, to permit manipulating objects independently.

20. MULTIMEDIA SOFTWARE TOOLS Animation: Multimedia AP Is Java3D is an API used by Java to construct and render 3D graphics, similar to the way Java Media Framework handles media files. It provides a basic set of object primitives (cube, splines, etc.) OpenGL was created in 1992 and has become the most popular 3D API in use today. OpenGL is highly portable and will run on all popular modern operating systems, such as UNIX, Linux, Windows, and Macintosh. GIF Animation Packages For a simpler approach to animation that also allows quick development of effective small animations for the web, many shareware and other programs permit creating animated GIF images.

21. MULTIMEDIA SOFTWARE TOOLS Multimedia Authoring: Tools that provide the capability for creating a complete multimedia presentation, including interactive user control, are called authoring programs. Macromedia Flash: Flash allows users to create interactive movies by using the score metaphor - a timeline arranged in parallel event sequences, much like a musical score consisting of musical notes. Elements in the movie are called symbols in Flash. Symbols are added to a central repository, called a library, and can be added to the movie's timeline. Macromedia Director: Director uses a movie metaphor to create interactive presentations. This powerful program includes a built-in scripting language, Lingo, that allows creation of complex interactive movies Authorware : Authorware is a mature, well-supported authoring product that has an easy learning curve for computer science students because it is based on the idea of flowcharts (the so-called iconic/flow-control metaphor). It allows hyperlinks to link text, digital movies, graphics, and sound.

22. Multimedia Systems Characteristics of Multimedia Systems : A Multimedia system has four basic characteristics: Multimedia systems must be controlled by computer . Multimedia systems are integrated . The information must be presented digitally . Interactive elements usually present in the interface of the final presentation.

23. Multimedia Systems Challenges for multimedia systems : Sequencing within the media -- playing frames in correct order/time frame in video Synchronization -- inter-media scheduling ( e.g. Video and Audio in Lip synchronization) Digitization -- translated from analog source to digital representation Data Compression – data storage, transfer (bandwidth) and processing overheads are high

24. Linear VS Non-Linear A Multimedia Project is identified as Linear when: It is not interactive Users have no control over the content that is being showed to them. users can sit back and watch it just as they do a movie or the television. Example: A movie A non-interactive lecture / demo show LINEAR

25. Linear VS Non-Linear A Multimedia Project is identified as Non-Linear when: It is interactive Users have control over the content that is being showed to them. Users are given navigational control Example: Games Courseware NON-LINEAR

26. Multimedia Developers, Multimedia Project & Multimedia Title The people who weave multimedia into meaningful wall hanging are called multimedia developers . The software, the messages, and the content presented on a computer, television screen, PDA (personal digital assistant), or mobile phone together constitute a multimedia project . If the project is to be shipped or sold to consumers or end users, typically delivered as a download on the Internet but also on a CD-ROM or DVD in a box or sleeve, with or without instructions, it is called a multimedia title .

27. Elements of Multimedia TEXT MULTIMEDIA TEXT AUDIO GRAPHIC VIDEO ANIMATION A broad term for something that contains words to express something. Text is the most basic element of multimedia. A good choice of words could help convey the intended message to the users (keywords). Used in contents, menus, navigational buttons 27 September 2017 28

28. Elements of Multimedia TEXT MULTIMEDIA TEXT AUDIO GRAPHIC VIDEO ANIMATION Example 27 September 2017 29

29. Elements of Multimedia GRAPHIC MULTIMEDIA TEXT AUDIO GRAPHIC VIDEO ANIMATION Two-dimensional figure or illustration Could be produced manually (by drawing, painting, carving, etc.) or by computer graphics technology. Used in multimedia to show more clearly what a particular information is all about (diagrams, picture). 27 September 2017 30

30. Elements of Multimedia GRAPHIC MULTIMEDIA TEXT AUDIO GRAPHIC VIDEO ANIMATION Example 27 September 2017 31

31. Elements of Multimedia AUDIO MULTIMEDIA TEXT AUDIO GRAPHIC VIDEO ANIMATION Produced by vibration, as perceived by the sense of hearing. In multimedia, audio could come in the form of speech, sound effects and also music score. 27 September 2017 32

32. Elements of Multimedia AUDIO MULTIMEDIA TEXT AUDIO GRAPHIC VIDEO ANIMATION Example 27 September 2017 33

33. Elements of Multimedia ANIMATION MULTIMEDIA TEXT AUDIO GRAPHIC VIDEO ANIMATION The impression of motion created by the consecutive display of images of static elements. In multimedia, animation is used to further enhance / enriched the experience of the user to further understand the information conveyed to them. 27 September 2017 34

34. Elements of Multimedia ANIMATION MULTIMEDIA TEXT AUDIO GRAPHIC VIDEO ANIMATION Example 27 September 2017 35

35. Elements of Multimedia VIDEO MULTIMEDIA TEXT AUDIO GRAPHIC VIDEO ANIMATION Is the technology of capturing, recording, processing, transmitting, and reconstructing moving pictures. Video is more towards photo realistic image sequence / live recording as in comparison to animation. Video also takes a lot of storage space. So plan carefully before you are going to use it. 27 September 2017 36

36. Tools Audio Adobe audition Fruity loops Sound Foundry Audacity (free) 27 September 2017 37

37. Tools Video Ulead Video studio Pinnacle Studio Windows Movie Maker ( Free) Adobe Premiere Pro Camtasia Sony Vegas 27 September 2017 38

38. Tools Graphics openGL 3D Max Maya 27 September 2017 39

39. Tools Text, Images & Animations PhotoShop HTML5 CSS3 Jquery Gif Animator 27 September 2017 40

40. Importance of Multimedia There are a number of fields where multimedia could be of use. Examples are:- Business Education Entertainment Home Public Places

41. Importance of Multimedia Business Use and Applications Sales / Marketing Presentation Trade show production Staff Training Application 27 September 2017 42

42. Importance of Multimedia Education Use and Applications Courseware / Simulations E-Learning / Distance Learning Information Searching 27 September 2017 43

43. Importance of Multimedia Entertainment Use and Applications Games Movies Video on Demand Online 27 September 2017 44

44. Importance of Multimedia Home Use and Applications Television Satellite TV SMS services (chats, voting, reality TV) 27 September 2017 45

45. Importance of Multimedia Public Places Use and Applications Smart Cards Security 27 September 2017 46